48 RENR5042-02 Troubleshooting Section If the value of the “Intermediate Speed Switch” parameter matches the position of the switch, continue to next step. Note: Atmospheric pressure is not a default parameter on the status screen. Throttle Signal Air Inlet and Exhaust System View the status for the throttle position on the status screen. Operate the throttle from the low idle position to the high idle position. The status should be 0 percent at low idle and the status should be 100 percent at high idle. If the status cannot operate in the full range, refer to Troubleshooting, “Throttle Position Sensor - Calibrate”. Check the air inlet and exhaust systems for restrictions and for leaks.
Refer to Systems Operation/Testing and Adjusting, “Air Inlet and Exhaust System”. Look for an indication of the warning lamp or restriction indicators that are tripped if the filters are equipped with these devices. These indicators are associated with plugged filters. Replace the plugged air filters or clean the plugged air filters according to the guidelines in the engine’s Operation and Maintenance Manual. Repair any leaks that are found in the system. Diagnostic codes that are related to the J1939 data link will prevent correct operation of the throttle if the throttle position is transmitted over the data link.
If there is a problem with the data link, the engine will remain at low idle until the data link is repaired. i02281043 Mechanical Noise (Knock) in Engine Circuit for the Electronic Unit Injector Inspect the J2/P2 ECM connector and the J300/P300 unit injector connector for proper connections. Refer to Troubleshooting, “ Electrical Connectors - Inspect”. Cut out each cylinder in order to isolate the misfiring cylinder or cylinders. If the results are inconclusive, shut off half of the cylinders and repeat the cylinder cutout test on the active cylinders that are remaining in order to locate those cylinders that are missing. Refer to Troubleshooting, “Injector Solenoid Circuit - Test”.
SMCS Code: 1000-035 Probable Causes Driven equipment Cylinder head and related components Gear train Fuel Supply Crankshaft and related components Check for a problem with the fuel supply and verify the fuel pressure. Verify that the fuel pressure sensor P209/J209 is installed. For further information, refer to Systems Operation/Testing and Adjusting, “Fuel System”. Piston Recommended Repairs Driven Equipment Boost Pressure Sensor (Intake Manifold Air), Rated Fuel Position and/or FRC Fuel Position Inspect the alignment and the balance of the driven equipment. Inspect the coupling. If necessary, disconnect the driven equipment and test the engine. 1.
With the engine at full load, monitor “Fuel Position” and “Rated Fuel Limit” on the status screen. If “Fuel Position” does not equal “Rated Fuel Limit”, then check air inlet manifold pressure. Cylinder Head and Related Components Inspect the components of the valve train for good condition. Check for signs of damage and/or wear to the valves, cylinder head gasket, etc. Inspect the condition of the camshafts. If a camshaft is replaced, new valve lifters must be installed. 2. Verify that there are no active diagnostic codes that are associated with the boost pressure sensor or with the atmospheric pressure sensor. Gear Train 3.
Monitor air inlet manifold pressure and atmospheric pressure for normal operation on the status screen. Inspect the condition of the gear train.